Explore relationships

Permian

Sixth and last period of the Paleozoic EraSubdivision of the Permian according to the ICS, as of 2023.Vertical axis scale: Millions of years agoEtymologyName formalityFormalUsage informationRegional usageGlobal (ICS)Time scale(s) usedICS Time ScaleDefinitionChronological unitPeriodStratigraphic unitSystemTime span formalityFormalLower boundary definitionFAD of the ConodontStreptognathodus isolatus within the morphotypeStreptognathodus wabaunsensis chronocline.Lower boundary GSSPAidaralash, Ural Mountains, Kazakhstan50°14′45″N57°53′29″E / 50.2458°N 57.8914°E / 50.2458; 57.8914Lower GSSP ratified1996Upper boundary definitionFAD of the Conodont Hindeodus parvus.Upper boundary GSSPMeishan, Zhejiang, China31°04′47″N119°42′21″E / 31.0798°N 119.7058°E / 31.0798; 119.7058Upper GSSP ratified2001The Permian ( ) is a geologic period and stratigraphic system which spans 47 million years, from the end of the Carboniferous Period 298.9 Ma (million years ago) to the beginning of the Triassic Period 251.902 Ma.

Use + to expand a branch. Click a topic name to open its summary.